Final preparation queru

Firstly there is no subject which is important or less important.  Please do treat all subjects at par.

Regarding coaching it depends upon your thought process.  I would suggest you to go through the syllabus and make a self judgement.

With regard to books, you would have to refer other authors and at the same time not to neglect insti mat, RTP and other insti publicaitons

ALL THE BEST!!